一道真题求助，多谢。（困惑中）

blackhorse

Q32:

To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants of fertility.

have to know a great deal more than now about the social and economic

have to know a great deal more than they do now about the social and economical

would have to know a great deal more than they do now about the social and economical

would have to know a great deal more than they do now about the social and economic

would have to know a great deal more than now about the social and economical

答案为E。我开始选的B。即使用将来时态，为什么不C呢？

请高手指点。

LES

http://forum.chasedream.com/dispbbs.asp?boardID=23&ID=56794&page=1

lesliejy

economic is totally different from economical.

kingsoft

     but  I  think  "ecomonical"  is  fully wrong

    why the answer is E??

    to LES:  thank you for the link,  but i don't know the corresponding number of this question

blackhorse

谢谢各位，我已经找到链接了。

LES

gwd 1-32  
http://forum.chasedream.com/dispbbs.asp?BoardID=23&ID=55880
http://forum.chasedream.com/dispbbs.asp?BoardID=23&ID=54087

http://forum.chasedream.com/dispbbs.asp?boardID=23&ID=59335&page=1

kingsoft

    great thanks to LES

kingsoft

     yeah  i  choose  D  

     i am  right !!! haha